2631015161 has 4 divisors (see below), whose sum is σ = 2670284112. Its totient is φ = 2591746212.

The previous prime is 2631015137. The next prime is 2631015173. The reversal of 2631015161 is 1615101362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2631015161 - 2⁶ = 2631015097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2631015161.

It is not an unprimeable number, because it can be changed into a prime (2631015661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19634375 + ... + 19634508.

It is an arithmetic number, because the mean of its divisors is an integer number (667571028).

Almost surely, 2^2631015161 is an apocalyptic number.

It is an amenable number.

2631015161 is a deficient number, since it is larger than the sum of its proper divisors (39268951).

2631015161 is an equidigital number, since it uses as much as digits as its factorization.

2631015161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39268950.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2631015161 is about 51293.4222001223. The cubic root of 2631015161 is about 1380.5149588685.

The spelling of 2631015161 in words is "two billion, six hundred thirty-one million, fifteen thousand, one hundred sixty-one".